Noble1 Posted December 10, 2022 Share Posted December 10, 2022 (edited) Ok so we swapped a 13 sp in place of the Eaton automatic. Well we initially removed the trans computer as well. had to jump the starter to start it with a switch. Most everything works good. missies are no speedometer. no engine brake. Engine will only rev to 1750. and no cruse control. Ok been using it this way until today put the trans computer back on the truck and just bolted it under the cab Hooked the Speedo back up and now we have a speedometer and the engine will run up to 2100 my question is can we jumper some of the transmission sensor wiring to make it think it’s in a gear so the cruse and Jake will work? anyone have the schematics of the transmission harness? Edited December 10, 2022 by Noble1 Quote Link to comment Share on other sites More sharing options...
mrsmackpaul Posted December 10, 2022 Share Posted December 10, 2022 Sorry this is way to modern for me Having said that I would start at the truck wreckers and have a look what Mack used or did when they put a RoadRanger in Maybe grab the loom and sensors off a truck getting wrecked with the same transmission as you have Paul Quote Link to comment Share on other sites More sharing options...
Adkat Posted December 19, 2022 Share Posted December 19, 2022 I'd be looking to alter the parameters in the engine ECU, change the trans in it from autoshift to manual, should fix your starter issue if it's not looking for a signal from the trans ecu. I take it was a 3 pedal autoshift, or you've bolted the clutch pedal in? Jake's need speed, clutch and throttle sensors to work usually, as does cruise. The right bloke with the right program would be able to sort this out quick smart for you. See how you get on Quote Link to comment Share on other sites More sharing options...
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